Tumblr at night: What happens to nitrogen when the sun rises?

Adam Rifkin stashed this in Tumblr!

Source: imgur.com

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Adam Rifkin
7:55 AM Dec 26 2012

Did you hear oxygen went on a date with potassium? It went OK.

<p>Did you hear oxygen went on a date with potassium? It went OK.</p>

Adam Rifkin
7:55 AM Dec 26 2012